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Ebyte Semtech SX1281 UART 7Km Range 2.4GHz 27dBm SMD 25*40.5mm CE RoHs FCC LoRa Wireless Transmitter RF Module

[IC]:SX1281

[Frequency]:2.4~2.5GHz

[Power]:27dBm

[Distance]:7km

[Size]:40.5*25mm

[Weight]:4.8±0.1g

[Introduction]:E28-2G4T27SX is an UART module based on SEMTECH SX1281, it adopts transparent transmission and works at 2.4GHz band. It adopts LoRa, FLRC and GFSK modulations. It features SMD packing with both IPX and PCB antenna interfaces, compatible with 3.3V and 5V IO port voltage.


Main ParametersPerformanceNote
Min.Max
Power supply(V)2.35.5Voltage over 5.5V will cause permanent damage to module
Blocking power [dBm]-10Chances of burn is slim when modules are used inshort distance
Operating temperature [℃]  -40+85-


Main ParametersPerformanceNote
Min.TypMax
Voltage supply [V]2.35.05.5≥5.0V ensures output power
Communication level [V]-3.3-For 5V TTL, it may be at risk of burning down
Operating temperature [℃]-40-+85-
Frequency [MHz]2400-2500ISM band
Transmitting current[mA]-500-Instant power consumption
Receiving current[mA]-27--
Turn-off current[μA]-10-Software is shut down
Transmitting power [dBm]  26.52727.5-
Receiving sensitivity [dBm]-130-132-134Air data rate: 115.2Kbps
Air data rate(bps)1k1k2MDefined by user via programming


Main parameterDescriptionNote
Distance7000mTest condition:clear and open area, antenna gain: 5dBi,antennaheight: 2.5m,air data rate: 1kbps
FIFO121 ByteMax. Transmitting length per packet
221 ByteContinuous transmission mode
Cache2048 Byte-
ModulationGFSK-
LoRa-
FLRC-
InterfaceUARTTTL
PackageSMD-
Connector1.27mm-
Size  40.5*25mm-
AntennaIPEX/Sample hole50Ω Impedance


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